John c



PUMP.

Patented July 28, 1896:

Wdneses.

UNITED STATES PATENT OFFICE.

JOHN C. WILSON, OF ALLEGHENY, PENNSYLVANIA.

PUMP.

SPECIFICATION forming part of Letters Patent No. 564,674, dated July 28,1896. Application had May 1,1896. semina 589,841. (No me.)

To all whom it may concern,.-

Be it known that I, JOHN C. VILSON, a citizen of the United States,residing at Allegheny, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inPumps; and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, refcrence being hadto the accompanying drawing, and to the letters of reference markedthereon, which forms a part of this specication.

The invention relates to force and lift pumps; and it consists in theimprovement thereof as hereinafter described and claimed.

The drawing is a median vertical section.

In the drawing, A represents the cylinder in which works the piston Bwith its upwardlyopening valve b and the central rod h by which it isreciprocated.

C is an outer casing, on whose inside is arranged the elastic packingc', each piece of packing being inclined from the middle toward each endon the inner face, against which bears the cylinder A. The latter has anexterior collar a, which is supported on an interior collar c of thecasing, and at the upper end an annular ange c2, to which is pivoted thelever D, which has oppositelyarranged arms d' d.

The lower and upper sections C C of the casing are connected by ascrew-sleeve C2 sol that there is left a space c3 between the twocylinders, into which passes the arm CZ of the lever, while the otherarn d is connected with the upper end of a spring E on the inside of thecylinder A.

The upper valves F are in horizontal partitions f of a separate cylinderF', in the center of which is a tube F2, filled with any suitablepacking, and through which passes the piston-rod. The cylinder F' isexternally rabbetted at the lower end to fit within and upon the upperedge of the cylinder A. G is the lower valve of the piston-cylinder,opening upwardly to admit water when the piston is ascending and closingtight when itis descending. H is packing between the shelves a and c onthe casing.

When it is desired to remove the pumpcylinder and its appurtenances forany reason, the piston is pulled up, pressing inwardly the spring E soas to release the levers which are locked on the top of the casing O.This allows the cylinder A, into whose upper end screws the lower end ofthe valvev cylinder F' t0 be drawn out with the piston andvalve-cylinder.

Having thus described all that is necessary to a full understanding ofmy invention, what I claim as new, and desire to protect by LettersPatent, is

l. The combination with a casing in two parts C Cheld together, by ascrew-sleeve, at such a distance apart, as to form an opening c3 betweentheir adjacent ends, and with an interior piston-cylinder, of the leverD having the reverse end arms d CZ' and the springs E E on the inside ofthe piston-cylinder as and for the purpose described.

2. In a pump, the upper cylinder F' with check-valves in partitionsthereof, a rabbet externally threaded to screw into the pistoncylinder;and a central tube with piston-rod packing and a screw cap at both endsas shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

o JOHN C. WILSON.

Witnesses:

SoLoN C. KEMON, A. RUPPERT,

